Originally Posted by jimmy544
I am hearing some sounds now that may be wheel bearings. The sounds are noticeable above about 45-50 mph. The car is a 1994 Buick Le Sabre with 91,000 miles on it. It is more noticeable at 65-70 mph. The tires are 3 years old with about 55k miles and are Pirelli P4s. There is still a lot of tread on all of the tires.
If the tires' treads have begun to harden with age, a tire might be causing the noise. If they haven't been rotated regularly, they may be more likely to give the noise, in my experience.
The only sure way is to rotate the tires front to back and see if the sound and noise changes. I tried the swerving test where on a sweeping curve at 35 mph turning to the left puts more load on the right front bearing and takes load off the left, and that would indicate the left bearing was suspect if the noise stopped. But my older Michelins quieted down on that test. A neighbor who had worked in a tire store before being a very competent shade tree mechanic felt the treads and said it was likely one of my front tires. I rotated front-back and the noise changed, quieted. The tire actually had bad belt according to Michelin selling store.
I actually replaced a front wheel bearing under warranty because I thought it was the bearing that was a year old.